Used as an intermediate in the synthesis of pharmaceuticals and agrochemicals, particularly in the production of thiophene derivatives and heterocyclic compounds. It serves as a building block in organic reactions where sulfur-containing functional groups are required. Its aldehyde group allows for condensation reactions, making it useful in the development of dyes, fragrances, and specialty polymers. Also employed in research for creating biologically active molecules due to its ability to participate in C–C bond formation and nucleophilic addition reactions.